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Effects of vortex generator on cylindrical protrusion aerodynamics
Springer Science and Business Media LLC - Tập 25 - Trang 7-12 - 2016
P. S. Vignesh Ram, Toshiaki Setoguchi, Heuy Dong Kim
Experimental and numerical studies were carried out to evaluate the effect of vortex generator on a small cylindrical protrusion at Mach number 2.0. The experiments were performed using the supersonic blow down wind tunnel on different heights of cylindrical protrusion with vortex generator placed ahead of them. The upstream and downstream flow around the cylindrical protrusion is influenced by vo...... hiện toàn bộ
Influence of Endwall Air Injection with Discrete Holes on Corner Separation of a Compressor Cascade
Springer Science and Business Media LLC - Tập 30 - Trang 1684-1704 - 2021
Zhiyuan Cao, Xi Gao, Xiang Zhang, Fei Zhang, Bo Liu
The aim of this study is to reveal the influence mechanism of endwall air injection with distributed holes on the corner separation of a highly loaded compressor cascade, so as to promote the application of injection in aero-engines. Single-hole and double-hole endwall injection schemes featuring different axial locations, pitchwise locations, injection mass rates and injection directions, were de...... hiện toàn bộ
Acoustic wave prediction in flowing steam-water two-phase mixture
Springer Science and Business Media LLC - Tập 3 Số 3 - Trang 147-154 - 1994
Xu, Jinliang, Chen, Tingkuan
The transient two-fluid model has been used to develop a general relation for acoustic waves. The analysis is valid in principle over the whole void fraction region. Flow pattern transitions from one flow regime to the other are assumed to occur at certain void fractions. Different correlations are used to calculate the interfacial area and interfacial drag force per unit mixture volume for bubbly...... hiện toàn bộ
Experimental Analysis on Influencing Factors of NOx emission in Gas-Fired Heating and Hot Water Combi-Boilers
Springer Science and Business Media LLC - Tập 30 - Trang 1151-1159 - 2020
Weiye Zhou, Wenbo Liu, Fei Long, Jianhai Zhang
To study the influencing factors of NOx emission in gas-fired heating and hot water combi-boilers, a boiler with the maximum heat input of 26.0 kW was selected, and influencing factors including flue restrictor diameter, fan power, nozzle aperture, nozzle ejection distance and air relative humidity on NOx formation were determined. The NOx test rig has been built and the concentration of NOx at th...... hiện toàn bộ
Numerical investigation on effectiveness of flow separation control in two-dimensional high-load compressor cascade by synthetic jet
Springer Science and Business Media LLC - Tập 21 - Trang 441-446 - 2012
Songtao Wang, Le Cai, Xun Zhou, Shaopeng Lu
The effectiveness of flow separation control in two-dimensional high load cascade by synthetic jet is investigated through numerical simulation of the effect of excitation frequency and amplitude together with the adaptability of synthetic jet to off-design conditions. Test results indicate that synthetic jet can be used to effectively control the large-scale two-dimensional flow separation in com...... hiện toàn bộ
Simulation of Combustion Flow of Methane Gas in a Premixed Low-Swirl Burner using a Partially Premixed Combustion Model
Springer Science and Business Media LLC - Tập 31 - Trang 1663-1681 - 2022
Caiyuan Xiao, Milad Omidi, A. Surendar, As’ad Alizadeh, Dmitry O. Bokov, Binyamin, Davood Toghraie
Because the rotational current stabilizes the flame by creating a recirculation zone, it may increase the risk of reversal. For this reason, low-spin combustion is used to stabilize the flame while preventing flashbacks. Therefore, in this study, the combustion flow of methane gas in a low-swirl burner is simulated using a partially premixed combustion model. Furthermore, the fuel flow rate is con...... hiện toàn bộ
The effect of blade outlet angle on performance and internal flow condition of mini turbo-pump
Springer Science and Business Media LLC - Tập 20 - Trang 32-38 - 2013
T. Shigemitsu, J. Fukutomi, R. Nasada, K. Kaji
Mini turbo-pumps having a diameter smaller than 100mm are employed in many fields; automobile radiator pump, ventricular assist pump, cooling pump for electric devices, washing machine pump and so on. Further, the needs for mini turbo-pumps would become larger with the increase of the application of it for electrical machines. It is desirable that the mini turbo-pump design is as simple as possibl...... hiện toàn bộ
Energy Loss Analysis of Novel Self-Priming Pump Based on the Entropy Production Theory
Springer Science and Business Media LLC - - 2019
Hao Chang, Weidong Shi, Wei Li, Jianrui Liu
An analysis of the numerical model influence on the ground temperature profile determination
Springer Science and Business Media LLC - Tập 26 - Trang 82-88 - 2017
Marek Jaszczur, Inga Polepszyc, Aneta Sapińska-Śliwa, Andrzej Gonet
The estimation of the ground temperature profile with respect to the depth and time is the key issue in many engineering applications which use the ground as a source of thermal energy. In the present work, the influence of the model components on the calculated ground temperature distribution has been analysed in order to develop an accurate and robust model for the prediction of the ground tempe...... hiện toàn bộ
Film cooling performance of a row of dual-fanned holes at various injection angles
Springer Science and Business Media LLC - Tập 26 - Trang 453-458 - 2017
Guangchao Li, Haofeng Wang, Wei Zhang, Zhihai Kou, Rangshu Xu
Film cooling performance about a row of dual-fanned holes with injection angles of 30°, 60 ° and 90° were experimentally investigated at blowing ratios of 1.0 and 2.0. Dual-fanned hole is a novel shaped hole which has both inlet expansion and outlet expansion. A transient thermochromic liquid crystal technique was used to reveal the local values of film cooling effectiveness and heat transfer coef...... hiện toàn bộ
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